Martin a



(No Model.)

M. A. McMARTIN.

MUSIC LEAF TURNER.

No. 469,587. Patented Feb. 23, 1892.

ff ili WITNESSES I VEN 70/? I J 77 I /%W 1.: 7% WWW ATTORNEYS UNITED STATES PATENT OFFICE.

MARTIN A. MCMARTIN, OF RATON, TERRITORY OF NEW MEXICO, ASSIGNOR TO HIMSELF AND JAMES R. GIVENS, OF SAME PLACE.

MUS|C-LEAF.TURNER.

SPECIFICATION forming part of Letters Patent No. 469,587, dated February 23, 1892.

Application filed April 15, 1891.

To aZZ whom it may concern.-

Be it known that I, MARTIN A. MCMARTIN, of Raton, in the county of Colfax and Territory of New Mexico, have invented anew and Improved Music-Leaf Turner, of which the following is a full, clear, and exact description. 7

My invention relates to improvements in music-leaf turners; and the object of the in- [O vention is to produceasimple and convenient device which may be quickly and securely fastened to a piano, organ, music-rack, or any convenient support and which is adapted to quickly and accurately turn the leaves of r 5 sheet-music in either direction. The device may be also used for turning the leaves of other kinds of books, although it is especially intended for turning musicdeaves.

The invention consists in certain features of construction and combinations of parts, which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of'the device adjusted upon a support and applied to a book. Fig. 2 is a broken end view of the same,partly go in section. Fig. is a side elevation of the device,showin g in section the support to which it is attached. Fig. 4 is a front elevation showing the main shaft provided with an extensible handle instead of a pulley, and Fig. 5 is a detail edge view of the extensible handle.

The mechanism of the device is supported in an approximately rectangular case 10, the upper portion of which is separated by a lon- 4o gitudinal and vertical partition 10, and the case is held toslide vertically on a plate 11, which plate is doubled over at its upper end, as shown at 12, so that it will fit upon a sup port, as 13, and the lower end of the plate 11 terminates in a horizontal plate 14, and in the back portion of thisplate is mounted a thumb screw 15, the upper end of which terminates in a head 16, which is adapted to rest against the under side of the support 13, so that by adjusting the bent end 12 of the plate 11 upon the upper portion of the support and the Serial No. 388,975- (No model.)

screw 15 on the under portion the plate and the case mounted thereon will be securely held in place.

In the front portion of the plate l lis a vertical screw 17, which connects with the lower portion of the case 10 and which is adapted to move through the case, and this screw is provided with a thumb-nut 16, which is supported on the upper side of the plate let, and by turning the nut the screw will be turned so as to change the position of the case.

A shaft 18 is mounted horizontally in the case near the lower part thereof, and this shaft extends out through the frontof the ease and is provided with a pulley 19, having grooves 20 in its face. The pulley is adapted to be turned by hand; but, ifdesired, abelt or cord may be secured in the grooves and its ends extended downward to connect with the treadle mechanism, so that the pulley may be turned by foot-power, or it maybe turned by the knees of the operator, suitable connections being made with the pulley, so that by pressure of the knees the pulley will be turned 7 5 either to the right or left. Instead of using the pulley, however, the shaft 18 may be provided with an extensible handle 34, which consists of two parts, the upper part 35 having at one end a head 36, which fits asquared portion of the shaft, and the lower part 37, which has a longitudinal slot 38 therein, and is held to the upper part by screws 39, which extend through the slot. By loosening the screws the position of the lower end of the handle in relation to the upper end may be changed, and the parts are held together by tightening the screws. The lower end of the part 37 of the handle terminates in a thumb-piece 40.

The shaft 18 is provided with arms 21, which extend upward therefrom and which terminate in toothed segments 22, and these segments mesh with independent gear wheels or pinions 23, which are mounted on each side of the central partition l0 in the case, and 5 each pinion carries an arm 2i, which extends radially from the pinion and which is slotted near the end, as shown at 25, so that a spring clamp 26 may be adjustably secured to the arm by means of a pin 26, which extends through one leaf of the clamp and through the slot in the arm. These spring-clamps are arranged at right angles to the arms, and are of a common form, each consisting of two similar leaves 27, which are arranged opposite each other and which are provided with overlapping lugs 28 near the center, which lugs are pivoted together, so that the leaves may swing toward and away from each other, and the leaves are normally held with their front ends pressed togetherby means of a spiral spring 27, which is coiled around the pivots of the clamps and the ends of which press against the rear ends of the leaves 27. This construction is not shown in detail; but the clamps are of common form and the construction will be readily understood.

Each clamp 26 carries a leaf-holder, which leaf-holder is composed of two similar separable parts, which are secured to the t'rontends of the clamps. These parts comprise two similar wire members 29, Whichextend from the front end of awleaf 27, and are arranged nearly parallel'witheach other, converging slightly toward'their outer ends, and the outer ends of themembers29 terminate ina rectangular loop 30. The twoparts of the holdercomposed of the members 29 and the loops 30 are arranged so that the loopswill come opposite each other, and the pressure of the clamp 26 will normally hold the two parts of the holders together, so that the loops v3O will press against each other, as shown in Fig. 3, and when a leaf :is inserted between the parts of .the

. holder it will be seenthat the parts will be parts of the holders.

pressed upon opposite sides of the leaf and will hold it securely'in place.

The support 13-is providedwith a .clam p 26 which is arranged-at oneside of the main device, and the outer leaf of the clamp termiates, in a spring-wire 31 ,which is bent into tbeformof a circle at the ends, as shown at 32, so that there will be nodanger of its tearing a leaf, and this spring wire or arm 31 Serves to'holdthe leaves of the book'in position,-which arenot held-in the holders formed of themembers 29 and loops 30.

tlooperate the device, it is clamped to a support in the manner described: A book is arranged'llpon the support adjacent to thedevice, the holders are opened by pressing upon the rear ends of the clamps 26,and the leaves 33 of .the book are-inserted between thetwo When the machine is provided with two arms 24, as shown in the drawings, thearms are arranged so that they will extend in the same direction and the holderswill thus be enabled to clasp two leaves of a book when the book is opened, as shown in Fig. 1. To turn the leaves, the operator simplyturns the pulley 19 to the right or left, as desired, and this turns the shaft 18, the arms 21, the-gear wheels or pinions 23, the arms 24:, and the leaf-holders, and it will be readily seen that the operation of turning the leaves is extremely simple and can be done very quickly. It will be observed, too, that as the leaves are held securely in the holders theycannot blow about oigaccidentally turn over.

'l have shown the device provided with two arms and a holder for each arm; but it is obvious that a greater number may be provided,

if desired.

Having thus described my invention, I claim as new and desire to secure by Letters 'Patent 1. A music-leaf turner comprising a vertically-adjustable case, a clamping device for securing the case to a su.pport,.a revoluble shaftpivoted in the case and provided with operating -means,swinging arms havingtheir inner ends geared to the shaft,.and'spring leaf-holders adj ustablysecured in the -.outer ends of the arms, substantially as described.

2. In a music-leaf turner, the combination, with a maincase and ashaft-mounted therein, .of swinging longitudinally-slo'tted arms gearedto the shaft, and leaf-holders secured adjustablyin the slotted'ends of the armsxby boltsorpins, each leaf-holderconsisting of .a spring-clamp and spring :members secured to the inner ends of-the clamps and terminating with a main case carrying turning mechanism,

as described, of a plate secured to the case- 7 and having its upper end bent as shown, and a'clamping-screw arranged at the lower end of the ,plate, so as to alignwith its bent upper .end, substantially as described.

5. In a music-leaf turner, the combination, with a main case carrying leaf-turning mech-' anism, of a plate secured to the case, a clamping device-for securing the plate toa support, and a'screw mechanism forraising and'lowering the case on the plate, substantially as described.

.MARTIN A. MOMARTIN.

Witnesses:

l. A. SoHoMBURe, CHRISTIAN P. Plans. 

